readline: fix freeze if keypress event throws
#2107
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`emitKeys` is a generator which emits `keypress` events in an infinite loop. But if `keypress` event handler throws, the error stops the loop, leaving generator in a broken state. So this patch restarts the generator when an error occures.
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I agree that if LGTM |
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LGTM. |
rlidwka
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`emitKeys` is a generator which emits `keypress` events in an infinite loop. But if `keypress` event handler throws, the error stops the loop, leaving generator in a broken state. So this patch restarts the generator when an error occures. PR-URL: #2107 Reviewed-By: Christopher Monsanto <chris@monsan.to> Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
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landed in bd01603 |
Fishrock123
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Jul 17, 2015
Notable changes * src: Added a new `--track-heap-objects` flag to track heap object allocations for heap snapshots (Bradley Meck) nodejs#2135. * readline: Fixed a freeze that affected the repl if the keypress event handler threw (Alex Kocharin) nodejs#2107. * npm: Upgraded to v2.13.0, release notes can be found in https://github.com/npm/npm/releases/tag/v2.13.0 (Forrest L Norvell) nodejs#2152. PR-URL: nodejs#2189
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The issue is described here: #1968
I consider
keypressevent in readline a public api, and if such a handler throws, readline should continue to work normally.Basically, I see are two good ways to deal with it:
Since everything in readline is synchronous now, adding
nextTickwould break things. So I went with option 1.This PR fixes a particular bug. But avoiding throwing in repl might still be a good idea. So PR #1968 might still make sense, but as a refactor, not a bugfix (I'll let someone else to review it though).
// cc: @monsanto